#include <windows.h>
#include <stdio.h>
#include <psapi.h>

// To ensure correct resolution of symbols, add Psapi.lib to TARGETLIBS
// and compile with -DPSAPI_VERSION=1

void PrintMemoryInfo( DWORD processID )
{
	HANDLE hProcess;
	PROCESS_MEMORY_COUNTERS pmc;

	// Print the process identifier.

	printf( "\nProcess ID: %u\n", processID );

	// Print information about the memory usage of the process.

	hProcess = OpenProcess(  PROCESS_QUERY_INFORMATION |
		PROCESS_VM_READ,
		FALSE, processID );
	if (NULL == hProcess)
		return;

	if ( GetProcessMemoryInfo( hProcess, &pmc, sizeof(pmc)) )
	{
		printf( "\tPageFaultCount: 0x%08X\n", pmc.PageFaultCount );
		printf( "\tPeakWorkingSetSize: 0x%08X\n", 
			pmc.PeakWorkingSetSize );
		printf( "\tWorkingSetSize: 0x%08X\n", pmc.WorkingSetSize );
		printf( "\tQuotaPeakPagedPoolUsage: 0x%08X\n", 
			pmc.QuotaPeakPagedPoolUsage );
		printf( "\tQuotaPagedPoolUsage: 0x%08X\n", 
			pmc.QuotaPagedPoolUsage );
		printf( "\tQuotaPeakNonPagedPoolUsage: 0x%08X\n", 
			pmc.QuotaPeakNonPagedPoolUsage );
		printf( "\tQuotaNonPagedPoolUsage: 0x%08X\n", 
			pmc.QuotaNonPagedPoolUsage );
		printf( "\tPagefileUsage: 0x%08X\n", pmc.PagefileUsage ); 
		printf( "\tPeakPagefileUsage: 0x%08X\n", 
			pmc.PeakPagefileUsage );
	}

	CloseHandle( hProcess );
}

int main( void )
{
	// Get the list of process identifiers.

	DWORD aProcesses[1024], cbNeeded, cProcesses;
	unsigned int i;

	if ( !EnumProcesses( aProcesses, sizeof(aProcesses), &cbNeeded ) )
	{
		return 1;
	}

	// Calculate how many process identifiers were returned.

	cProcesses = cbNeeded / sizeof(DWORD);

	// Print the memory usage for each process

	for ( i = 0; i < cProcesses; i++ )
	{
		PrintMemoryInfo( aProcesses[i] );
	}

	return 0;
}
